Thanks guys. So where does the wing get its strength? The plans called for shear webs to be placed between the ribs on the main spar. Do these give the wing strength?
A great deal. I believe this was one of the reasons the Platz/Fokker Dr-1 & D-VII didn't need interplane rigging. Remember the grain must go up and down. I've seen a lot of builds where these were installed with the grain horizontal - usually in post-crash trash heaps.
And fiberglass the wing root where the fuselage covers it.